PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of accurately and uniformly fertilizing by a simple measuring method.SOLUTION: The seedling transplanter includes: a travelling body 2 which travels in a field a seedling planting part 4 disposed in the travelling body 2 for planting seedlings in the soil a fertilizing device 5 which discharges a fertilizer to the soil from a fertilization guide 63 disposed in the front of the travelling body 2 from the seedling planting part 4 a pair of right and left detectors 71a disposed in right and left travelling wheels 10 disposed in the front of the travelling body 2 from the fertilization guide 63 to be plunged into the soil a fertilizer concentration sensor 71 for detecting the concentration of fertilizer in the soil by detecting the electric resistance or electric conductivity between the detectors 71a a control device 72 for changing the quantity of application of the fertilizer by the fertilizing device 5 based on data detected by the fertilizer concentration sensor 71 and a temperature sensor 73 for detecting the temperature of the soil. The data detected by the fertilizer concentration sensor 71 are corrected based on data detected by the temperature sensor 73.COPYRIGHT: (C)2012,JPO&INPIT【課題】簡易な測定方法で精度良く一様施肥を実現することができる苗移植機を提供する。【解決手段】圃場を走行する走行車体2と、この走行車体2に設けられ土壌に苗を植付ける苗植付部4と、この苗植付部4よりも走行車体2の前部に設けた施肥ガイド63から土壌に肥料を吐出する施肥装置5と、施肥ガイド63よりも走行車体2の前部に配置した左右の走行車輪10に設けられ土壌中に突入する左右一対の検出子71aと、これらの検出子71a間の通電抵抗または電気伝導度を検出して土壌の肥料濃度を検出する肥料濃度センサ71と、肥料濃度センサ71の検出データに基づいて施肥装置5の施肥量を変更する制御装置72と、土壌の温度を検出する温度センサ73とを備え、この温度センサ73の検出データに基づいて肥料濃度センサ71の検出データを補正する。【選択図】図1
